/*
 *  Copyright 1999-2019 Seata.io Group.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package io.seata.server;

import io.seata.common.XID;
import io.seata.common.thread.NamedThreadFactory;
import io.seata.common.util.NetUtil;
import io.seata.core.constants.ConfigurationKeys;
import io.seata.core.rpc.ShutdownHook;
import io.seata.core.rpc.netty.NettyRemotingServer;
import io.seata.core.rpc.netty.NettyServerConfig;
import io.seata.server.coordinator.DefaultCoordinator;
import io.seata.server.env.ContainerHelper;
import io.seata.server.env.PortHelper;
import io.seata.server.metrics.MetricsManager;
import io.seata.server.session.SessionHolder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/**
 * The type Server.
 *
 * @author slievrly
 */
public class PigxSeataServer {

	/**
	 * The entry point of application.
	 * @param args the input arguments
	 * @throws IOException the io exception
	 */
	public static void main(String[] args) throws IOException {
		// get port first, use to logback.xml
		int port = PortHelper.getPort(args);
		System.setProperty(ConfigurationKeys.SERVER_PORT, Integer.toString(port));

		// create logger
		final Logger logger = LoggerFactory.getLogger(PigxSeataServer.class);
		if (ContainerHelper.isRunningInContainer()) {
			logger.info("The server is running in container.");
		}

		// initialize the parameter parser
		// Note that the parameter parser should always be the first line to execute.
		// Because, here we need to parse the parameters needed for startup.
		ParameterParser parameterParser = new ParameterParser(args);

		// initialize the metrics
		MetricsManager.get().init();

		System.setProperty(ConfigurationKeys.STORE_MODE, parameterParser.getStoreMode());

		ThreadPoolExecutor workingThreads = new ThreadPoolExecutor(NettyServerConfig.getMinServerPoolSize(),
				NettyServerConfig.getMaxServerPoolSize(), NettyServerConfig.getKeepAliveTime(), TimeUnit.SECONDS,
				new LinkedBlockingQueue<>(NettyServerConfig.getMaxTaskQueueSize()),
				new NamedThreadFactory("ServerHandlerThread", NettyServerConfig.getMaxServerPoolSize()),
				new ThreadPoolExecutor.CallerRunsPolicy());

		NettyRemotingServer nettyRemotingServer = new NettyRemotingServer(workingThreads);
		// server port
		nettyRemotingServer.setListenPort(parameterParser.getPort());
		UUIDGenerator.init(parameterParser.getServerNode());
		// log store mode : file, db, redis
		SessionHolder.init(parameterParser.getStoreMode());

		DefaultCoordinator coordinator = new DefaultCoordinator(nettyRemotingServer);
		coordinator.init();
		nettyRemotingServer.setHandler(coordinator);
		// register ShutdownHook
		ShutdownHook.getInstance().addDisposable(coordinator);
		ShutdownHook.getInstance().addDisposable(nettyRemotingServer);

		// 127.0.0.1 and 0.0.0.0 are not valid here.
		if (NetUtil.isValidIp(parameterParser.getHost(), false)) {
			XID.setIpAddress(parameterParser.getHost());
		}
		else {
			XID.setIpAddress(NetUtil.getLocalIp());
		}
		XID.setPort(nettyRemotingServer.getListenPort());

		try {
			nettyRemotingServer.init();
		}
		catch (Throwable e) {
			logger.error("nettyServer init error:{}", e.getMessage(), e);
			System.exit(-1);
		}

		System.exit(0);
	}

}
